Trials of a Covid-19 vaccine being developed by AstraZeneca and Oxford University will resume after being paused due to a reported side effect in a patient in the UK. On Tuesday, AstraZeneca said the studies were being paused while it investigated whether the adverse reaction was linked with the vaccine. The university said in a statement that it was "expected" that "some participants will become unwell" in large trials such as this one. The World Health Organization (WHO) says nearly 180 vaccine candidates are being tested around the world but none has yet completed clinical trials. The government's chief scientific adviser, Sir Patrick Vallance, told the Downing Street press conference on Wednesday what had happened in the Oxford trial was not unusual.

Source: The Star September 12, 2020 17:15 UTC